Year: 2009
Tools: QuartzComposer, CoreImage Filter

After my first steps with Pixel Bender I saw, that Shaders aren't that complicated and I wanted to try out GLSL for writing an image kernel for Quartz Composer.

I stumbled upon Petri Leskinen's blog ( and a very cool metaballs demo he did with pixelbender. I tried to port this to GLSL and here ist the result.


Meanwhile the image kernel developed into a parametrised Quartz Patch that I use in VDMX as a image source. It looks very nice when thle blobs move to the sound. In the right video you can also see what happens if you skip the Blinn-Phong Shading and use an animated texture instead.